Drill.



No. 628,781. Patented July ll, I899. B. E. FARRINGTON & L. D. COPELAND. DRILL.

(Application flied May 5, 189B.)

(No Model.)

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RUFUS E. FARRINGTON AND LUCIUS D. COPELAND, OF PIHENIX, ARIZONA TERRITORY; SAID COPELAND ASSIGNOR TO SAID FARRINGTON.

DRILL.

SPECIFICATION forming part of Letters Patent No. 628,781, dated July 11, 1899;

Application filed May 5, 1898. Serial No. 679,788. (No model.)

To all w'ltorlt it may concern.-

Be it known that we, RUFUS ELIAS FAR- RINGTON and LUOIUS DAY COPELAND, of Phoe IllX,ll1 the county of Maricopa and Territory ofArizona,haveinventedanewand Improved Drill, of which the following is a full, clear, and exact description.

The invention relates to metal tools and implements; and its object is to provide a to new and improved drill more especially designed for the use of miners, or other persons, and arranged to permit the passage of a heating medium such as hot Water or steam through the point of the drill, to aid in loosening ice and frozen ground, and to permit of washing the ground, for mining purposes. Theinvention consists of novel features and parts and combinations of the same, as will be described-hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figurel is a side elevationof the improvement. Fig. 2 is a sectional side elevation of the same. Fig. 3 is an elevation of part of the handle-bar.

The improved drill is provided with a handle-bar A, preferably made hollow, and provided at its lower closed end with a T B, carrying a hollow drill-point O and a nipple D, projecting at one side to connect with a hose E, leading from a steam or hot-water-supply. In the upper end of the point C is formed a valve-seat F, adapted to be closed by a valve G for shutting off the steam, hot water,orother heating medium entering the T B from the hose, The valve being secured-on a stem G, extending upwardly through a stuffing-box H, held on the lower closed end of the handle-bar A. The'upper end of the stem G is provided with a lateral pin I, passing through slots A, formed in the sides of the handle- 5 loarA, to connect at its outer ends with a sleeve 1, fitted to slide on the handle-bar. A spring J, coiled on the handle-bar and supported at the lower end by a cross-pin J or its equivalent, presses against thelower end 50 of the sleeve I to hold the latter normally in an uppermost position to keep the valve G to its seat F.

Now when it is desired to admit a heating medium to the hollow point C the operator moves the sleeve I down Ward against the tension of the spring J to cause the stern G to move the valve G oif its seat, and consequently the heating medium passing into the T B from the tube E and nipple D can pass through the valve-seat F and into the hollow point C and out through the lower end thereof into the ground into which the point is driven,

so that the heating medium passes into the ground and thaws the same to aid in readily loosening the ground. At the same time the heating medium passing into the ground serves for washing the ground to obtain the precious metals, such as gold and the like.

From the lower end of the valve G extends downwardly an extension stem G adapted to'pass with its lower end intothe opening ofthe point- C, so that in case loose dirt or gravel is worked into the hollow point it is readily pushed out of the said stem to prevent clogging of the point. The downward movement of the sleeve I is limited by a pin K, projecting from the handle-bar A and adapted to be engaged by a slot 1 formed in the lower end of the sleeve I. Thus when the sleeve I is pushed downward into the position shown in Fig. 2 the pin K limits the downward movement of the sleeve at the time the lower end of the extension-stem Gr passes into the outlet-opening for the point.

The pin 1 previously mentioned and connecting the sleeve I with the stem G moves in the slots A- in register with the slot 1 but the upper ends of the said slots are enlarged, as at A so that the pin 1 can pass into the enlarged slots and the operator on turning the sleeve I can bring the slots 1 out of register with the pin K. Now when the sleeve I is pushed downward the valve G is only unseated from the valve-seat F without the lower end of the extension-stem G passing into the outlet-opening for the point C, so that the latter remains clear and free for the passage of the heating medium, as previously described.

In the operation of the device the nipple D is first coupled to the steam -hose E, after which thepoi n'tof the drill is driven into the ground any desired distance. Now as the operators hand grasps the sleeve I to press the device downward into the ground such manipulation will, it is manifest, force the sleeve downward on the 'handle-bar'against the action ofthe spring, will unseatthe valve, and admit steam to and through the hollow point. It must be remembered, however, that in this operation above described the sleeve will have been turned so as I to throw the slot 1 out of register with the stop-pin K, whereupon such stop-pin will engage with the lower edge of the sleeve I and prevent any further downward movement of the same. Such is the operation of the device so long as the hollow point C is free from being clogged with loose dirt or gravel or the like; but when the point does become so clogged the operator turns the sleeve Iuntil the slot 1 therein comes in register with the pin K, at which point further downward movement of the sleeve is possible, the pin entering the slot, and thereby or the like.

It will-be observed that the valve is under the complete control of the operator who is manipulating the drill, for when he grasps the sleeve to press the drill into the ground the valve will open, and the valve will immediately automatically close whenever he relieves the pressure on the sleeve.

Havingthus fully described our invention, weclaim as new and desire to secure by Letters Patent- 1. A drill, comprising a handlebar, a hollow drill-point connected therewith, a steam-supply connected with said hollow drill-point, a valve controlling the admission of steam to said point, and a sleeve slidably fitted on said handlebar and connected with the said valve, said sleeve being arranged for engagement with one hand of the operator whereby to open the valve, as and for the purpose set forth.

'2. A drill comprising a handle-bar, a hollow drill-point connected therewith, a steam-supply connected with said hollow point, a valve in said point for controlling the admission of steam thereto, said valve being provided with a stem whose lower end extends into the end of the said point, a sleeve mounted to turn and to slide longitudinally upon said handlebar and connected to theopposite end of said valve-stem whereby to unseat the valve and thrust the extension of its stem through the d rill-point and a projection. upon said handlebar and contacting with said sleeve to abridge the aforesaid movement thereof when the said sleeve is turned, as and for the purpose set said valve whereby it may open thesame when moved longitudinally upon the handle-bar and formed with aslot in its lower edge, and a pin on said handle-bar, said pin coming in contact with the lower edge of said sleeve to limit the longitudinal movement of the same and being adapted to enter the said slot whereby to permit of thefurther movement of'said sleeve, as set forth.

4. A drill provided with a hollow point, a heating-medium supply connected with the point, a valve forcontrolling the flow of the heating medium to the'said point, means for manipulating the said valve, to hold the same open or closed, the said means comprising a spring-pressed sleeve slidable on the drill handle-bar and carrying the plug-stem,*and a stop for limiting the movement ofsaid-sleeve, substantially as shown and described.

' 5. A drill, comprising a hollow point, a steam-supply pipe connected therewith, a valve for controlling the admission of steam to said point, a handle-bar connected to said point and provided with widened slots and a projection below said 'slots, a sleeve fitted to slide on said handle-bar'and provided with a cross-pin inserted through said slots and connected to the stem of the valve, the said sleeve being provided with a slot in its lower edge adapted to be'brought into register with the projection on the handle-bar, "as and for the purpose set forth.

RUFUS E. FARRINGTON. LUOIUS D. COPELAND;

Witnesses:

J. W. KINCAID, HENRY MORGAN. 

